Inventories (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2021	Mar. 29, 2020
Inventory [Line Items]
Inventory Write-down		$ 50.0
Fixed-price Contract [Member]
Inventory [Line Items]
Amount of coffee committed to be purchased	$ 637.0
Price-to-be-fixed Contract [Member]
Inventory [Line Items]
Amount of coffee committed to be purchased	$ 654.0